2121201032120 has 64 divisors (see below), whose sum is σ = 4808659413600. Its totient is φ = 842092162560.

The previous prime is 2121201032009. The next prime is 2121201032149. The reversal of 2121201032120 is 212301021212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16822910 + ... + 16948530.

Almost surely, 2^{2121201032120} is an apocalyptic number.

2121201032120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121201032120 is an abundant number, since it is smaller than the sum of its proper divisors (2687458381480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121201032120 is a wasteful number, since it uses less digits than its factorization.

2121201032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128808 (or 128804 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2121201032120 its reverse (212301021212), we get a palindrome (2333502053332).

The spelling of 2121201032120 in words is "two trillion, one hundred twenty-one billion, two hundred one million, thirty-two thousand, one hundred twenty".